Pump jack



Jul 15 1924. C. KUECHLER PUMP JA'CK File d Sept. 26. 1923 2 Sheets-Sheet2 Patented July 15, 1924.

-STATES CHARLES KUECHLER, O'F PRESCOTT, WISCONSIN.

PUMP JACK.

Application filed September 26, 1923. Serial No. 664,875.

To all whom it may concern:

Be it known that I, CHARLEs KUECHLER, a citizen of the United States,residing at Prescott, in the county of Pierce andState of Wisconsin,have invented certain new and useful Improvements in Pump Jacks, ofwhich the following is a specification.

My invention relates to improvements in pump jacks, its object beingparticularly to provide a construction of jack by means of which thelifting power is applied to the ump rod without efliciently reducinglateral everage, and to provide a supporting construction for thelifting levers, furnishing 1 rigidity of support, and so constructed asto be particularly easy of assembling and of lubrication.

To this end, my invention consists in the construction, combination, andarrangement of parts hereinafter set forth and claimed.

In the accompanying drawings, forming part of this specification:

Figure 1, is a front elevation of my invention applied to a pump jack.

Figure 2, is a top view of the same.

Figure 3, is a rear elevation of my invention applied to a pump jack,shown partly in section.

Figure 4, is a section on line 4-4 of Figure 3; and V Figure 5, is aside elevation partly broken away and in section.

Referring to the drawings, A represents a pump, and 2 the pump rod, thepump being suitably secured to the foundation as by bolts 4.

In carrying out my invention, I employ a base member 3, suitably securedto the foundation as by bolts 11. The base meniher, as shown best inFigure 2, is formed with a collar portion 5, partly encircling the baseof the pump, a removable collar portion 6, partly encircling the otherside of the pump base and being secured to the collar portion 5 as bybolts 7. The base is adapted to be further anchored to the pump as by abrace 8, secured at its lower end to the foundation and at its upper endtothe rear of the pump.

The central base portion 3 connects upon opposite sides with the bearingsupports 9 for the shafts 10. The bearing supports 9 are anchored to thefoundation as by the bolts 11, collars 12 being fitted upon the tops ofthe bearing supports 9 and secured thereto as by bolts 13. Journalbearings for the shafts 10 are thus secured between the bearing supports9 and connected collars 12.

Mounted upon the front ends of the shafts 10 are the disks 14, to whichdisks the lever arms 15 have eccentric pivotal connection 16. The leverarms at their upper ends are pivotally connected to the cross arm 18 by.

means of the bolt 17 passing through opposite openings 20 in the leverarms, a plurality of the openings 20 being provided to secure desiredadjustment. The cross arm, as shown in Figure 4, is composed of spacedmembers between which centrally passes the pump rod 2, a bolt 19 passingthrough the cross arm and pump rod.

The ends of the shafts 10, opposite to the disks 14, carry worm gears21, positioned within the casings 22, supported by the bearingsupporting bases 9. The casings 22 are provided with movable top covers23, the covers 23 and the body of the casings 22 being constructed toform intermediate bearings 24 for the cross shaft 25. The shaft 25supports worms 26 intermeshing with the worm gears 21. Supported uponone end of the shaft 25 are the idler and power pulleys 27 and 28.

The casings 22 are adapted to be kept filled with greases or oil tolubricate the worm gears and worms and the connected bearing for theshafts 10.

My construction has many advantages over the ordinary construction ofpump jacks, among which advantages are the following:

The construction and arrangement of the central supporting base member 3and integrall connected bearing bases 9, by means of which all theoperating parts are held firmly placed in connection with each other andwith the pump, and by means of which the actuating levers 15 are held infirmly placed position on opposite sides of the pump rod and lateralleverage upon the pump rod prevented. This construction also enablesmost effective lubrication of the actuating worm gears, worms, andshafts through the lubricant contained in the casings 22.

. The worm gears 26, as shown in Figure 3, actuate toward each other,preventing thrust upon the casings 22.

Power is applied in the ordinary way from any suitable source of powerconnected with the driving pulley.

I claim:

1. In combination with a pump and rod, pump jack mechanism comprising abase member centrally and detachably anchored to said pump, bearing basemembers integrally connected to the sides of the central base member,said bearing base members each including a shaft bearing, a shaft journaled in said bearing, a casing carried by each of said bearing basemembers and receiving one end of said shaft, a worm gear secured uponsaid shaft within said casing, inwardly directed worms within saidcasing intermeshing with said ears, a driveshaft connecting said worms,isks mounted upon the outer ends of said first mentioned shafts, leverarms eccentrically connected to said disks upon opposite sides of thepump rod, and a detachable connection between the upper end of saidlevers and said pump rod.

2. In combination with a pump and rod,

- a central base member detachably anchored to said pump, connectedbearing supports upon the sides of said base member, each of saidbearing supports including a casing, shafts journaled in said bearinsupports and extending into said casing, ever arms positioned upon theouter side of said pump rod and detachably connected at their upper endsto said rod, actuating eccentrics for said and inwardly directed Wormscarried by saiddrive shaft and intermeshing with said gears.

3. In combination with a pump and rod, a central base member having acollar portion partly encircling said pump, a clamping collarpartly'encirclmg the opposite side of said pump and removably connectedto said base member, laterally extending bearing bases carried by saidcentral base member, said bearing bases each including a bearing for ashaft and a connected casing, shafts journaled in said bearingsextending into said casings, lever arms positioned upon opposite sidesof said pump rod, and a cross arm pivotally connecting the upper ends ofsaid lever arms having a central detachable connection with the pumprod, actuating eccentrics carried by the outer ends of said shaftshaving pivotal connection with the lower ends of said levers, a driveshaft extending through said casings, an operative connection withinsaid casings between said drive shaft and first mentioned shafts, andremovable covers for'said casings.

In testimony whereof I afiix my signature.

CHARLES KUEGHLER.

